The cute feline plush sings the Soft Kitty song when you press its paw. Sheldon's mom used to sing the song to him when he was sick as a child. The song first featured on The Big Bang Theory in the first season episode The Pancake Batter Anomaly, in which Penny is left to take care of an ill Sheldon. The lyrics to the song are: Soft kitty, warm kitty, little ball of fur. Happy kitty, sleepy kitty, purr, purr, purr.

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